// lodash中的函数组合方法 _.flowRight

const reverse = arr => arr.reverse();
const first = arr => arr[0];
const toUpper = s => s.toUpperCase();
const compose = (...args) => value => args.reverse().reduce((acc, fn) => fn(acc), value);

const f = compose(toUpper, first, reverse);

let arr = ['one', 'two', 'three'];
console.log(f(arr));


// function compose(...args) {
//     return function (value) {
//         return args.reverse().reduce(function (acc, fn) {
//             return fn(acc);
//         }, value);
//     }
// }
